An image scanner is a device that optically scans images, printed text, handwriting, or an object and converts it to a digital image.
Understanding Image Scanners
Simply put, an image scanner is a piece of hardware designed to capture visual information from physical sources and transform it into a digital format that can be stored, viewed, and manipulated on a computer. This process relies on optical technology to read the source material.
What Can an Image Scanner Scan?
Based on the definition, an image scanner can handle a variety of physical inputs:
- Images: Photographs, drawings, illustrations
- Printed Text: Documents, books, articles
- Handwriting: Notes, signatures, written documents
- Objects: Certain scanners can even capture the surface details of 3D objects.
The scanner essentially takes a "picture" of the physical item and creates a corresponding digital file.
Common Types: The Flatbed Scanner
The most widely recognized type of image scanner, particularly in home and office environments, is the flatbed scanner.
| Scanner Type | Description | How it Works |
|---|---|---|
| Flatbed | The most common type found in homes and offices. | Document or object is placed face-down on a glass window for scanning. |
This design makes it versatile for scanning single sheets of paper, books (by placing the book face-down), and even small objects within the scanning area.
In essence, an image scanner bridges the gap between physical and digital media, allowing you to preserve, share, and work with printed or written materials in a digital world.
